Nice concept, has some sweet scenes. I liked how early in the game the three siblings asked things for each other rather than themselves, and how i could give payback to some bullies later on, like buying the 8-track for the boy whose bully sister wanted it, and buying a newer game console for the boy whose brother wouldn't let him play with his game boy (I knew it would lower my score, but it was too satisfactory to do).
Scores seemed a bit weird though - sometimes I'd get low/zero score even with what seemed like a correct gift. Was I supposed to give coal to kids who were excited over a thing but weren't particularly mean, or even rude, to anyone? I also got zero points for giving the Xbox Assassin's Creed game to the kid who wanted it and was wearing the Xbox shirt, and 0 points for giving the PS version for the other kid whose shirt I didn't look at. Some of the wishes were open to interpretation, and I thought I chose the best option (or one of them) but got a low score in most of those cases.
In the gift-throwing minigame it's a bit unclear at what exact point you're supposed to throw the gift, a visual indicator would have been nice. On the sledge, I mean. Otherwise it works well!
The music provides a nice mood and I can see you made a game around it, but the game is a bit too long to listen to the loop for the entire time.
Not sure if you were supposed to play through the game by memorizing everything, but as they got quite complex I got lazy and cheated by writing the wishes down.
Overall, the game is nice and has a very sweet mood (including the ending, though I didn't try giving her coal). The graphics and gameplay work well, too!